Cards are a cultural product that has rapidly become popular among primary and secondary school students in recent years. From the initial cartoon characters such as Maybelli and Doraemon, to popular IPs like Ultraman and Eloli today, the brand Xiaoka has become the object of children's pursuit with its exquisite design, rich variety, and unique gameplay.

The reason why card culture can quickly become popular among primary and secondary school students is partly because it satisfies their curiosity and exploratory desire for new things; On the other hand, it is due to its unique social attributes.

Cards, as a medium to enter a common interest circle, not only allow children to feel fun and a sense of achievement in the process of unpacking and collecting cards, but also enable them to establish deep friendships through communication and sharing with other children. Therefore, brand cards have become a "social artifact" in children's hands, allowing them to find a sense of belonging and identity in their social circles.

The design and sales of cards naturally have the characteristic of being easily addictive. They have both ornamental and competitive functions, and are divided into different levels according to their rarity. Generally, the rarer the card, the higher the attack power and the more exquisite the card surface is made. Before unpacking, the buyer does not know which cards are in the card pack and whether there are rare cards. So, every time the card is opened, it's like experiencing an unknown adventure. As long as you embark on the journey, you have a chance to get the treasure. Although the probability is slim, the probability of extremely rare hidden cards appearing is even only 0.05%, but this actually highlights the owner's achievements.